Quantum Physics Forum

Post thread
Join in expert discussion on quantum physics. Quantum physics is the mathematical description of the motion and interaction of subatomic particles. Quantum Mechanics and Field Theory.

Quantum Interpretations and Foundations

A question about quantum entanglement
Graduate Path integrals and propagators
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Quantum field theory vs particle physics
  • · Replies 4 ·
Replies
4
Views
9K
Graduate Photon-Ghost Coupling: Quantum Lagrangian Density Analysis
  • · Replies 9 ·
Replies
9
Views
3K
Graduate Best Teleportation Fidelity to date
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Rough Description of State Space
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Complete basis for quantum oscillator Hilbert space
  • · Replies 43 ·
2
Replies
43
Views
15K
Graduate How does the operator in Bra-Ket notation work in the position basis?
  • · Replies 10 ·
Replies
10
Views
7K
Graduate What is D-Wave's Progress in Quantum Computing?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Understanding Basis Ambiguity in Zurek's Decoherence Paper
  • · Replies 14 ·
Replies
14
Views
4K
Graduate How did Rydberg rewrite Balmer's equation to determine it was a special case?
  • · Replies 6 ·
Replies
6
Views
12K
Graduate Measuring velocity and position of a particle
  • · Replies 7 ·
Replies
7
Views
11K
Graduate Is the study of black holes using entanglement practical?
  • · Replies 8 ·
Replies
8
Views
3K
Graduate How Does Momentum Measurement Affect Uncertainty in an Infinite Potential Well?
  • · Replies 4 ·
Replies
4
Views
3K
Undergrad "Comparing Formulas: E=p^2/2m and E=hf
  • · Replies 2 ·
Replies
2
Views
3K
Graduate About symmetry operation and a corresponding unitary transformation
  • · Replies 4 ·
Replies
4
Views
4K
Graduate What is Quantum Physics in simple?
  • · Replies 25 ·
Replies
25
Views
6K
Graduate Where does the energy possessed by a free electron come from
  • · Replies 5 ·
Replies
5
Views
5K
Graduate Where can I find a comprehensive derivation of the Euler-Lagrange equation?
  • · Replies 1 ·
Replies
1
Views
4K
Graduate The Spin-Up/Spin-Down Effect in the Stern-Gerlach Experiment
  • · Replies 6 ·
Replies
6
Views
5K
Graduate Operators and Complete State Descriptions in Quantum Mechanics
  • · Replies 2 ·
Replies
2
Views
3K
Graduate How does spin justify Pauli's principle?
  • · Replies 14 ·
Replies
14
Views
4K
Graduate Why do we need a photon to mediate the electromagnetic force?
  • · Replies 99 ·
4
Replies
99
Views
16K
Graduate Quarks are smaller then electrons? Are they real or virtual?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate What is the concept of spooky action at a distance?
  • · Replies 3 ·
Replies
3
Views
4K
Graduate Have all the electrons in this universe come from a single electron?
  • · Replies 8 ·
Replies
8
Views
5K
Graduate How Can I Build a Scanning Tunnelling Microscope for Under $150?
  • · Replies 9 ·
Replies
9
Views
2K
Graduate Expectation Value of Momentum in H-Atom
  • · Replies 9 ·
Replies
9
Views
18K
Graduate What Are the Best Research Articles on Quantum Dots?
  • · Replies 4 ·
Replies
4
Views
4K
Graduate Do equivalent quantum states imply entanglement?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Penrose: Road to Reality, just out
  • · Replies 19 ·
Replies
19
Views
9K
Graduate Malus law in quantum mechanics
  • · Replies 1 ·
Replies
1
Views
5K
Graduate Feynmann diagrams, bhabha scattering
  • · Replies 15 ·
Replies
15
Views
5K
Graduate Can the Pauli principle be visualized?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Under what conditions will quantum effects become important for gravity?
  • · Replies 5 ·
Replies
5
Views
4K
Graduate Can Kinetic Energy Ever Be Negative in Quantum Mechanics?
  • · Replies 7 ·
Replies
7
Views
10K
Graduate Demystifying Spin: A QM Intro to Probability & Geometry
  • · Replies 8 ·
Replies
8
Views
3K
Graduate What Happens to the Wavefunction After Measurement?
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Wave packets that feel harmonic potential
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Unclear about the Heisenberg uncertainty principle
  • · Replies 4 ·
Replies
4
Views
3K
Graduate Generation of polarization entangled photons
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Hamiltonian of Minimum Uncertainty State
  • · Replies 2 ·
Replies
2
Views
2K
Graduate What Are Spin Functions and How Do They Work?
  • · Replies 3 ·
Replies
3
Views
12K
Graduate Perturbation Theory: Higher Order Energy + Deviation from True Solution?
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Entangled Photons with no shared Past
  • · Replies 40 ·
2
Replies
40
Views
8K
Graduate Is the 2-D Wigner-Eckert Theorem applicable to cylindrical harmonics?
  • · Replies 7 ·
Replies
7
Views
4K
Graduate How Does the Klein-Gordon Hamiltonian Define the Evolution of Field Variables?
  • · Replies 2 ·
Replies
2
Views
7K
Graduate Is quantum field theory a genuine quantum theory?
  • · Replies 3 ·
Replies
3
Views
9K
High School Charge of Proton & Electron: Explained
  • · Replies 4 ·
Replies
4
Views
6K
Graduate How Many Gluons Are Inside a Proton?
  • · Replies 1 ·
Replies
1
Views
3K
Graduate Does Quantum Mechanics Suggest Violations of Conservation Laws?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Why the reflection and transmission?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Understanding the Equivalence of Dirac Delta Functions in Quantum Mechanics
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Do Quantum Numbers Determine the Node Structure of Wavefunctions?
  • · Replies 3 ·
Replies
3
Views
9K
Graduate Time independent schrodinger equation: delta potential
  • · Replies 6 ·
Replies
6
Views
9K
Graduate Multiple Particles in a Box: How Does the Schrodinger Equation Change?
  • · Replies 3 ·
Replies
3
Views
4K
High School The Double Slit Experiment: A Fascinating Introduction to Quantum Physics
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Quantum vaccum one dimensional?
  • · Replies 2 ·
Replies
2
Views
2K
Graduate Commutators and the Parametric Nonrelativistic Particle?
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Solving the Mystery of Energy Eigenfunctions
  • · Replies 4 ·
Replies
4
Views
14K
Graduate Question on Experiments with Entangled Particles and Quantum Mechanics
  • · Replies 28 ·
Replies
28
Views
6K
Graduate Selection rules and related stuffs
  • · Replies 1 ·
Replies
1
Views
4K
Graduate How to Solve Quantum Mechanics Problems Using Commutation Relations
  • · Replies 4 ·
Replies
4
Views
2K
Graduate How Do You Calculate Spectral Line Width?
  • · Replies 1 ·
Replies
1
Views
7K
Graduate Tunneling past the speed of light
  • · Replies 6 ·
Replies
6
Views
4K
Graduate QM of particles with no common past light cone
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Photon is different from an eletron
  • · Replies 4 ·
Replies
4
Views
2K
Graduate KWhat conditions must a wavefunction satisfy for all values of x?
  • · Replies 8 ·
Replies
8
Views
4K
Graduate Is this state coherent or squeezed according to the definitions given?
  • · Replies 25 ·
Replies
25
Views
14K
Graduate Relativity & Quantum Theory: Is Locality Violated?
  • · Replies 225 ·
8
Replies
225
Views
25K
Graduate Understanding the Uncertainty Principle and the Physical Reality of Electrons"
  • · Replies 26 ·
Replies
26
Views
6K
Graduate Does the Pauli Exclusion Principle Imply Orthogonality of Quantum States?
  • · Replies 7 ·
Replies
7
Views
3K
Graduate Why is glass QM transparent ?
  • · Replies 22 ·
Replies
22
Views
6K
Graduate A general math theory on the quantum harmonic oscillator?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Quantum angle selectivity of polirizers filter
  • · Replies 12 ·
Replies
12
Views
3K
Graduate Can Entangled Particles Enable Faster-Than-Light Communication?
  • · Replies 61 ·
3
Replies
61
Views
11K
Graduate Quantum Problem: Particle Motion Under Constraints and Christoffel Symbols
  • · Replies 1 ·
Replies
1
Views
2K
Graduate Fermi Golden Rule Tutorial | PH.UTexas.edu
  • · Replies 1 ·
Replies
1
Views
16K
Graduate Is there a minimum possible wavelength?
  • · Replies 6 ·
Replies
6
Views
7K
Graduate What are the effects of quantum energy on macroscopic objects?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Why Does the Bloch Sphere Use Theta Over Two for Qubit Representation?
  • · Replies 2 ·
Replies
2
Views
4K
Graduate Even another 2-slit experiment setup
  • · Replies 2 ·
Replies
2
Views
3K
Undergrad Neutron Decay Into Proton: Hawking's New Book
  • · Replies 1 ·
Replies
1
Views
3K
Graduate What Does the Double Slit Experiment Reveal About the Nature of Particles?
  • · Replies 2 ·
Replies
2
Views
3K
Graduate Unlocking Mathematical Mysteries: Wave Mechanics & Inner Product Spaces
  • · Replies 2 ·
Replies
2
Views
2K
Graduate How Does a Flat Black Body Radiate Energy into a Hemisphere?
  • · Replies 3 ·
Replies
3
Views
3K
Graduate Do Photons Have Different Rest Mass?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad A few questions about particles.
  • · Replies 18 ·
Replies
18
Views
7K
Graduate Harmonic Oscillator, Ladder Operators, and Dirac notation
  • · Replies 4 ·
Replies
4
Views
9K
Undergrad Intensity of light constantwhy rate of emission of electrons changes?
  • · Replies 1 ·
Replies
1
Views
4K
Graduate Entanglement: What is it and how is it measured?
  • · Replies 11 ·
Replies
11
Views
8K
Undergrad Understanding Quantisation: Definition and Examples for Clear Understanding
  • · Replies 14 ·
Replies
14
Views
10K
Graduate Uncertainty of when a photon is absorbed
  • · Replies 10 ·
Replies
10
Views
4K
Graduate Probability Density of Electron in EM & Matter Waves
  • · Replies 4 ·
Replies
4
Views
2K
Graduate Godel incompletness related to physics?
  • · Replies 14 ·
Replies
14
Views
3K
Graduate Another misleading observer example, or not?
  • · Replies 5 ·
Replies
5
Views
3K
Graduate Measuring instant changes in particles
  • · Replies 3 ·
Replies
3
Views
2K
Graduate Is State 1 the Cause of State 2 or Vice Versa?
  • · Replies 7 ·
Replies
7
Views
2K
Graduate Question on observer created reality
  • · Replies 179 ·
6
Replies
179
Views
26K
Graduate Tom Green says I'm wrong about Quantum Physics
  • · Replies 16 ·
Replies
16
Views
4K
Graduate Frustrated total internal reflection
  • · Replies 5 ·
Replies
5
Views
5K